초록

An occupancy sensor is provided for determining whether a room is occupied. The occupancy sensor integrates a battery-powered PIR motion detector and a battery-powered Hall Effect switch, each of which communicates wirelessly with a controller, in a single housing.

대표청구항 ▼

The invention claimed is: 1. An occupancy sensor for detecting occupancy of a room with an access door comprising: a battery-powered passive infrared motion detector for producing a motion detected status message; a battery-powered Hall Effect switch for producing a door open or door closed status

The invention claimed is: 1. An occupancy sensor for detecting occupancy of a room with an access door comprising: a battery-powered passive infrared motion detector for producing a motion detected status message; a battery-powered Hall Effect switch for producing a door open or door closed status message; and a battery-powered transceiver for wirelessly transmitting motion detected, door open and door closed status messages; wherein the motion detector, the Hall Effect switch and the transceiver are all contained in a single housing. 2. The occupancy sensor of claim 1 further comprising one or more batteries of the same type contained in the single housing to act as a power source for the motion detector, the Hall Effect switch and the transceiver. 3. The occupancy sensor of claim 2 wherein the occupancy sensor wirelessly transmits a low battery status message when the one or more batteries have less than 20 percent battery capacity remaining. 4. The occupancy sensor of claim 3 further comprising one or more batteries of the same type contained in the single housing to act as a power source for the motion detector and the Hall Effect switch. 5. The occupancy sensor of claim 1 further comprising a cover to the single housing and a tamper switch that causes a tamper detected status message to be sent when the cover is removed from the single housing. 6. An occupancy sensor for detecting occupancy of a room with an access door comprising: a battery-powered passive infrared motion detector for detecting motion within the room; a battery-powered Hall Effect switch for detecting whether the door is open or closed; wherein the motion detector and the Hall Effect switch are each in wireless communication with a controller and are both contained in a single housing.